Every business is different, and the best online credit card processing company for you will be different than what’s best for another company. Those differences are because companies have other pricing structures, discounts for volume, and even industry-specific options.

To help you sort through the dozens of options out there, we’ve put together a list of companies offering payment processing for small and medium-sized businesses. Every company on this list is PCI compliant, accepts all major credit card and payment types, and has cost-effective pricing.

What Are the Best Online Credit Card Processing Companies of 2024?

1. Square

Best for small businesses

Founded in 2009 by Jim McKelvey and Twitter co-founder Jack Dorsey, Square is a pioneer in the world of mobile online credit card processing. You’ve definitely seen Square before — the little white, square-shaped plug-in reader. It’s used by small business owners, those who need a way to take mobile payments, and as a point-of-sale provider.

Square is highly portable, and you’ll receive a free magstripe reader when you activate your account. They also have additional hardware choices, including a contactless and chip reader and a dual-screen register. 

One of the reasons square is one of the best online credit card processing companies for small businesses is because they don’t charge monthly fees, and you can cancel at any time. So it’s a more approachable option if you’re not ready for a monthly subscription.

Square also doesn’t have any chargeback fees, it comes with free POS software, and the mobile card reader is free. Square also has clear flat-rate pricing based on the type of transaction.

Here are Square’s credit card processing fees:

  • Swiped or chipped transactions: 2.6% + 10¢
  • Keyed (card-not-present) transactions: 3.5% + 15¢
  • Online transaction: 2.9% + 30¢

Those rates are for businesses doing $250,000 or less per year, and Square has custom pricing after that. Packages are determined by payment volume, average transaction size, history as a Square seller, and more. Rates can be more than that 2.6% + 10¢ rate above. 

Square has easy-to-add pricing for customer loyalty accounts, gift cards, payroll, and email marketing.

Square Pros & Cons


  • No monthly subscription fees
  • No chargeback, set up, PCI compliance, or refund fees
  • Free mobile card reader
  • Free point-of-sale software


  • Not the best for high-risk merchants
  • Not for large companies with high volume transactions
  • No 24/7 support unless you have the paid POS plan for restaurants

Get stared with square

Square doesn’t charge a monthly subscription or set-up fees. They also send new merchants a free mobile card reader and offer point of sale software.

2. Helcim

Best high-volume pricing

Helcim is known as one of the best online credit card processing companies for small businesses for a number of reasons, and one of the biggest is that they have incredibly transparent pricing. In addition, they offer full-service merchant services, which means they will likely have tools no matter how you process payments or manage your business

Helcim doesn’t charge monthly fees, and they charge processing fees using an interchange-plus structure. Interchange fees are what card networks charge merchants for processing debit and credit card payments. Each network charges its own rates, and those vary even more based on the kind of card. For example, rewards credit cards typically charge merchants the highest rates. 

Instead of flat rates, Helcim charges you the interchange fee plus their own fee. So what you pay per transaction varies based on the card. So sometimes you’ll pay a little more and sometimes less.

Helcim determines your interchange plus fees based on monthly volume, average transaction, and business type. Below is their fee table for retail businesses:

Helcim fee table

Their volume-based pricing is based on your average three-month volume.

Depending on your business, you may need to purchase hardware to process payments. Helcim has a card reader for $199 and a thermal printer for $79.

Helcim Pros & Cons


  • No monthly subscription fees or contracts
  • Automatically applied volume discounts
  • No setup or PCI compliance fees
  • Free point-of-sale software


  • Will not work with high-risk merchants
  • May charge chargeback fees
  • No 24/7 support 

Helcim is the best for high-volume pricing

Helcim doesn’t charge monthly subscription fees, and they automatically apply volume discounts based on your last three months’ sales volume.

3. Stripe

Best for online payments

Stripe is a solid choice for online credit card processing because there are no monthly fees and transparent, flat-rate pricing. They’re also willing to work with high-volume businesses by offering discounts and custom pricing. 

Depending on your business needs, you can purchase certified third-party processing equipment through Stripe, ranging from $59 to $249. Stripe’s services also easily integrate with programs like QuickBooks and MailChimp. But they do offer their own invoicing, fraud, analytics products, and more.

Companies processing over $1000,000 will need to contact Stripe for custom pricing, but below are their rates for company processing under that amount:

  • Credit cards and digital wallets: 2.9% + 30¢
  • International credit cards: 3.9% + 1%
  • Bank debits and transfers: 0.8% ($5.00 cap)
  • International payment methods: Starting at 80¢

One of Stripe’s benefits is that they take so many different forms of online payment, which is a serious perk for some businesses. You can also opt-in for Stripe Instant Payouts, which is where Strip instantly transfers money to your debit card. It’s an additional 1% with a minimum 50¢ fee.

Stripe Pros & Cons


  • 24/7 support
  • No monthly subscription fees or set-up fees
  • Accepts all mobile wallet payments
  • Hundreds of extensions and platforms are available 


  • No robust POS options
  • Not best for high-risk businesses

Need a company that accepts mobile wallet payments?

Stripe is one of the best for online payments because it accepts all mobile wallet payment types, they also don’t charge monthly subscription fees.

Related: Best High Yield Business Savings Accounts for 2024

4. Stax by Fattmerchant

Best all-in-one credit card processing

Stax by Fattmerchant is an all-in-one platform with subscription-based pricing. An interesting fact about the business: Fattmerchant is an acronym for Fast Affordable Transaction Technology.

For small business owners, there are three pricing tiers to choose from, and each includes a variety of integrated services.

Growth $99Pro $199Ultimate $199
Free terminal or mobile readerDigital invoicingRecurring invoices and scheduled payments
ACH processingText2Pay Mobile paymentAutomatic updates for stored credit cards
Free surcharging capabilitiesWebsite-hosted payment linksOne-click shopping card set-up with catalog management
Lite dashboard and analyticsSecurely store customer credit cards on fileAdvanced dashboard and reporting
Quick payment/backup processingAccounting reconciliation Lite Sync (Including QuickBooks)Data exports
API key integration capabilitiesDedicated account manager
Enhanced dashboards and reporting

In addition to those monthly fees, Stax charges interchange plus processing fees:

  • In-person payments: Interchange plus 8¢
  • Keyed-in payments: Interchange plus 15¢

Stax is one of the best online credit card processing companies for high-volume businesses that want lots of features. You can see that through what they offer with each pricing tier and the fact they don’t charge a percentage on top of their interchange fees

Stax by Fattmerchant Pros & Cons


  • 0% markup on interchange fees
  • 24/7 technical support
  • No long-term contracts
  • Add-ons like custom branding, QuickBooks Online, and same-day funding


  • High monthly subscription fee
  • Expensive for low-volume businesses
  • Not for high-risk merchants
Stax by Fattmerchant

Stax by Fattmerchant chargest 0% markup on interchange fees

You will also get a number of all-in-one services when you use Stax as your online credit card processor.

5. National Processing 

Best for industry-specific pricing

National Processing has been around since 2007 and is one of the better online credit card processing companies for small businesses with its budget-friendly pricing. National Processing keeps its fees low by offering basic processing services based on the type of business you run, so you’re only paying for the kinds of services you really need.

They also use interchange-plus pricing like some other companies on this list, so keep that in mind as you look over their pricing.

Below are National Processing industry-specific plans and pricing:

  • Restaurant: $9.95/month, plus 0.14% + 7¢
  • Retail: $9.95/month, plus 0.18% + 10¢
  • eCommerce: $9.95/month, plus .29% + 15¢
  • Cash discount: $39.95/month, plus 0% + 0¢
  • Subscription: $59/month, plus 0% + 9¢
  • Subscription Plus: $199/month, plus 0% + 5¢

All of their plans come with a free reprogram of existing equipment, free gateway setup, and a free mobile card reader. Higher-level plans include free terminals and pin pads. They also promise that they will beat your current rates or pay you $500 (only available to businesses with at least $10,000 in payments per month).

National Processing is also willing to work with high-risk businesses. Again, this is a somewhat arbitrary term that’s applied to businesses that have a perceived greater risk of financial failure. 

National Processing Pros & Cons


  • Industry-specific pricing
  • Works with high-risk businesses
  • No long-term contracts
  • Low fees


  • Additional fees are hard to find on their website
  • No 24/7 support
National Processing

National Processing has industry-specific pricing

Pay fees based on the type of business you run, and National Processing is also willing to work with high-risk businesses.

How to Choose the Best Online Credit Card Processing for Your Business

There are dozens and dozens of different credit card processing companies, and to help you find the best one for your business, we had some basic requirements set up for our research.

  • Must accept all major credit card types 
  • Must be PCI compliant (this is a security standard)
  • Must have cost-effective pricing

All of the companies on this list meet those standards, but the way cost of credit card processing works for your business will depend a lot on your transaction volume, type of business, and if you need hardware.

When you’re choosing a credit card processing company, pay attention to those factors. Interchange-plus pricing is generally lower, but it’s confusing for some and you won’t always know how much you’re paying.

You can keep your costs low by looking for a company that has low fees overall, like no setup fees, chargeback fees, refund fees, etc.


What is the best online payment processor?

This very much depends on the type of business you run and transaction volume. Based on our research, we’ve found the best for the following categories:

– Best for online payments: Stripe
– Best for small businesses: Square
– Best for industry-specific pricing: National Processing
– Best all-in-one credit card processing: Stax
– Best high-volume pricing

What is the least expensive way to process credit cards?

Interchange-plus pricing is typically less expensive, but it can be difficult to understand. You should also look for PCI-compliant companies because you’re less likely to deal with fraudulent transactions. Companies that offer high-volume discounts are cheaper if you’re processing lots of transactions on a daily basis.